97 



Genus 51. ApYRENiusi.t Fr. 



Stroma gelatinoso-carnose, fibroso-floccose, hollow, inflated ; hy- 



menium smooth, when di-y collapso-pubescent. 



Apyrenium Armeniacum, B, and Br, On oak sticks. Bath- 

 easton. October, 1865, 



One out of two British species. 



Genus 52. Hymenula.J Fr. 



Effused, very thin, maculseform, agglutinate, between waxy and 



gelatinous. 



Hymenula Punctiformis, B. and Br. On fir poles. Batheaston. 



Our only species. 



Genus 53. Ditiola.|| Fr. 



Orbicular, pateUoeform ; hymeuium discoid, gelatinous, at first 



veiled. 



The only British species has not occurred in our district. 



To present in a few words a summary of the foregoing lists we 

 find that out of 355 species of the Genus Agaricus recorded in 

 the " Outlines of British Fungology," our list contains only 159 ; 

 of Coprinus, 7 out of 24 ; of Bolbitius, 2 out of 4 ; of Cortiuarius, 

 19 out of 48 ; of PaxiUus 1 out of 3 ; of Gomphidius, 2 out of 3 ; 

 of Hygrophorus, 15 out of 27 ; of Lactarius, 13 out of 27 ; of Rus- 

 Bula, 10 out of 24 ; of CanthareUus, 5 out of 10 ; of Nyctalis, 2, all 

 known to Britain ; of Marasmius, 12 out of 25 ; of Lentinus, 1 out 

 of 7 ; of Panus, 3, all that are recorded as British ; of Lenzites, 1 out 

 of 4. In two genera, Xerotus and Schizophyllum, we are not repre- 

 sented at all. Of the remaining orders of the Hymenomycetes, viz., 

 the Polyporei, Hydnei, Auricularini, Clavariei, and TremeUini we 

 claim 179 species out of 312 recorded in the " Outlines," making the 

 total 338 out of 923, or as 1 to 2-738. But since that work was 

 published numerous species have been added, and in confirmation 



Dacrj'myces, which would be a similar case to that mentioned by De Bary, 



where, speaking of the Nostochaceae, he says " that certain parasitical 



Ascomycetes penetrate into them, distribute their mycelium through the 



growing thallus, and often become attached to their cells," thus causing the 



Nostocs to assume the appearance and forms of the Collemata. 



t ApjTenium, from puren, a fruit stone. 



% Hymenula, from hymen, a membrane. 



II Ditiola, from dittos, double, and ioulos, down. 



G 



